Power braked mobile drill



Aug. 30, 1932. D. c. KLAUSMEYER POWER BRAKED MOBILE DRILL Original Filed Oct. 8, 1924 2 Sheets-Sheet l Aug. 30, 1932. D. c. KLAUSMEYER POWER BRAKED MOBILE DRILL Original Filed Oct. 8, 1924 2 Sheets-Sheet 2 M Nsw W mm b w NR N M m a. n M Elm; fi 1 i n \k M 3 a m m mm rarearea Aug. so, late g H J DAVID C. KLAUESMEYER, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI BICK- FORD TOOL COMPANY, OF OAKLEY, CINCINNATI, OHIO, A CORPORATION OF OHIO POWER BBAKED MOBILE DRILL I Original application filed, October 8, 1924, Serial No.

. p 1928. Serial No. 2?4,258.

, This invention relates to machine-tools and more particularly to mea'nsfor facilltating 7 the transportation of machine-tools from one place to another and for securely maintaining them in any desired location. 7

Usually machine-tools are maintained in a fixed'position, being secured upon a suitable foundation or floor,'and the work-to be operated on is brought to the machine-tool.

There are, however, certain times and conditions, such as when very large work is to be machined, which make it desirable to have the machine-tool capable of being moved bodily, whereby it may be taken to the work, may be 7 "i movedrelatively thereto during a machining operation, or for any other reason may be moved about the plant.

This invention therefore has for an object so to onstruct a normally stationary type "of machine-tool-that'it readily may bemov'ed from one place to another.

Another object of this invention is to provide means for securely maintaining the machine-tool in any desired location and to hold it against strains-tending to overturn it.

A further object of the invention is to provide a plurality of locking devices to hold a machine-tool in any desired location and to provide fiuid pressure actuated means for actuating the locking devices.

Still another object is to provide a plurality of fluid pressure actuated locks for holding amachine-tool against movement and so to control the distribution of power thereto that all of the locks will be actuated simultaneousl and to the same de 'ree.

r A radial-drill is one type of machine-tool to which the present invention is adaptable and the invention will therefore be disclosed in connection with such a machine-tool merely as one practical embodiment thereof. It is to be understood, however, that the invention is likewise adaptable to various other types 10f machine-tools.

hese objects have been attained in a maehine-tool constructed with a base which supports the various other parts of the tool .and which may alsocarry the power means for actuating the machine-tool. This base is i not, as is customary, provided with means to 742,379. Divided and this application filed May 1,

anchor the machinetool down permanently but inasmuch as itis adapted to be moved relatively to the work or from place to place. it is preferably provided with means to facilitate such transportation. This means may consist of suitable wheels, rollers or other anti-friction devices and these devices are preferably caused to co-operate with a permanent way, such, for example, as spaced tracks which may be laid to any desired destination. Thus the machine-tool is so supported that it may be moved, under any suitable power, relative to the work or to any part of the plant.

The machine-tool having been moved to any desired place it is necessary that it be firmly secured in its new position to prevent its movement during the operation thereof. This invention therefore provides suitable locking devices which, when suitably actuated, serve to secure the machine-tool against movement and to prevent its overturning. These looking devices may conveniently comprise a plurality of friction-clamps adapted to engage either the permanent way or any other suitable stationary object, and fluid pressure actuated means is provided for actuating the clamps. The fluid pressure to actuate all of the clamps is preferably obtained from a single source and suitable equalizing devices are located intermediate the source of power and the clamps to cause power to be evenly distributed to all of said clamps whereby the gripping action of all of them will be the same.

This application is a division of my pend ing application Serial No. 742,376 filed Gctober 8, 1924.

Other objects and advantages will be in part indicated in the following description and in part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the art so fuily to apprehend the underlying features hereof that they may embody the same in the various ways contemplated by this invention, drawings depicting a preferred typical construction have been annexed as a part of this disclosure and, in such drawings, like characters of reference denote corresponding parts throughout all the views, of which V Figure 1 is a side ele'vation of a mobile radial drill embodying the present invention. Fig. 2 18 a plan of a radial drlllbase partly broken away better. to show. my improved fluid pressure actuated means for actuating Referring moreparticularly to the draw-- ings the invention is disclosed asiassociated with a radial drill comprising a column 0, radial-armA and the usualdrill-headD 'adthe plurality of clamps. Fig. 3 is a side view of'Fig. 2, certain parts being brokengaway better toillustrate the invention. Fig. 4 is an end view of Fig. 3,.also with certain parts broken away. Fig. 5 is a detail section ontheline55of Fig.3.

justably. mounted on the arm. Within the drill-head is ournaled a spindle S adapted to receive, a dr1ll-point or other suitable tool. Power to translate the arm vertically on the column and to rotate thes'pindle may be provided by a motor M, or other prime-mover,

' 'inany definite position but which instead is adaptedv to be moved relative to its support.

This invention relates particularly to the T meanspermitting transportation of the-base andmeans for securing it either temporarily or permanently in any desired location. Obviously any type of machine-tool could be so mounted, transported and secured in posi-' tion, therefore it is to be understood that the invention is adaptable to'various other ma- ]chine-toolsand is not limited to radial-drills. Tofacilitate the transportation of the ma- 'chinefits base ispreferably provided with suitable anti-friction devices such, as for eX- i ample wheels or rollers 1.,Preferably these anti-friction devices are guided to move in a predetermined path. TlllS may conveniently be accomplished by forming the wheels -with side fianges and fit'tingthem upon suitable tracks such as the rails 2. Adjacent the wheels 1 the base is provided withlockingdevices 3 which, when thebase and the machinetool thereon has been moved to any desired locatlon, may be actuated to secure the base to someimmovable object such as, for example, the rails 2. These locking devices preferably .Wgripped between'the lower surface of the comprise vertically movable clamping blocks 4 having jaws 5 and 6arranged at opposite sides of the rail web and adapted upon upward movement tofengage the under-side of the head of the rail 2. 1 Thus the rail-head is Machine -tools of this I wheels 2 and the jaws 5 and Gandthe machine base is held against movementboth vertically and horizontally.

' The clamping blocks are preferably formed upon the lower ends of slideblocks 63, 64,

and 66 vertically movable in 'guideways 67 formed in heavy brackets 7 secured godthe" 1 cent their upper ends the. blocks 63, 64, 65 and baseB adjacent its four corners.

66 are formed with apertures 63 64, 65," and 66 respectively, within which are fitted eccentries 69, 70, 71 and 7 2. The eccentrics 69 and 70 are carried byco-axial shafts 73 and74 journaledin bearingscarried by the base and to these shafts are secured rock-arms '7 5 and 7 6 respectively. An equalizingbar 7 7 is piv- 'otally connected at its opposite ends with the rock-arms 75 and 7 6 and serves, when moved in one direction underthe influence of a con- "necting rod 7 8, to oscillate the shafts? 3 and '74 thereby to lift 'tllGiblOCli S 63 and 64 and close the clamps with equal-pressure. The

79 and 80 carrying rock-arms 81 and 82 likewise connected together by an equalizing bar 83 pivoted intermediate its ends to aconnecting rod 84., The connecting rods 7 8 and 84 may be moved lengthwise, to effect the closing and opening of the clamps, by fluidact'uated means now to be described. 1

per wall'of the base B is a cylinder 85' within which is slidably mounted a second cylinder 86'l1aving a pivotal connection with the con- 'necting rod 7 8. I The'cylinder86 provides'an eccentricsfil and 7 2 are secured upon shafts Supportedfrom the underside of the upinternal bore 87 within which is slidingly" fitted a piston 88 operatively connected with the connecting rod 84. The cylinder 86iand its co-operative piston 88 constitute an equalizing fluid actuated motor-which actuatesall of said-locking devices. Fluid under pressure may be admitted into the cylinder 86 at eitherside of the piston 88 as by means of V pipes 89 and 90. As'shown in Figs. 3 and 4 the clamping devices are released; Now if by the manipulation of asuitable valve, (not shown), pressure is admitted into the cylinider 86 through pipe 90 the piston 88 will be moved to the left (Fig. 3) and the cylinder 86, being slidably mounted in the cylinder 85, will, simultaneously with the movement" of the piston, be moved to the right. This will cause theconnectingrods'78 and84 to be drawn toward each otherwhich in turn will as hereinbefore described effect rotation of the shafts 7 3, 7 4 and 79, 80 thereby'rotating the eccentrics 69, 70, 71, 72 and causing them to close the clamps on therails 2. When it is desired to'release the clamps pressure may be admitted through the pipe89 which. will cause all of the part s to be moved in the i opposite direction and the clamping jaws to release the rails. v

I From the foregoing it will beseen that this invention provides a simple and; efficient mounting for machine-tools whereby they may be moved from place to place and also fluid pressure actuated clamping devices for r maintaining the machine-tool in any desired position. It will also be seen that through the action of the means disclosed for actuating the clamping devices, all of the clamps are actuated simultaneously and the equalizing devices insure that they will all function equally.

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can, by applying current knowledge, readily adapt-it for various utilizations by retaining one or more of the features that, from the standpoint of the prior art, fairly constitute essential characteristics of either the generic or specific aspects of this invention and, therefore, such adaptations should be, and are intended to'be, comprehended within the meaning and range of equivalency of the following claims Having thus revealed this invention, I claim as new and desire to secure the following combinations and elements, or equivalents thereof, by Letters Patent of United States 1. In a machine tool, a base; a support therefor; a pair of clamps located in spaced relation on said base for securing the base to its support; an eccentric device for actuating each of said clamps to cause them to grip said support; a shaft carrying each of said eccentric devices; a rock-arm secured to each of said shafts; an equalizing bar pivotally connected to both of said rock-arms;

an actuating member connected to said equalizing bar, and fluid pressure actuated means for shifting said actuating member.

2. In a machine-tool; a base; a track upon which the base is supported; a plurality of pairs of clamps for securing said base to its support, each of said clamps comprising a movable member having a j aw adapted forcibly to engage the underside of the head of said track; eccentric devices for shifting said movable members upwardly to cause them to grip said head; an equalizing device between the clamps of each pair; and fluid actuated means for simultaneously rotating all of said eccentric devices to actuate said clamps.

3. In combination with a machine tool, a base; a support for said base; means permitting said base to be moved on its support: a plurality of sets of locking devices adapted to secure said base against movement relative to its support; a fluid pressure motor for actuating all of said locking devices, said motor comprising a shiftable cylinder and a relatively shiftable piston therein, the two comprising an equalizing device; an operative connection between said cylinder and one of said sets of locking devices; an operative connection between said piston and another of said sets of locking devices; and

equalizing means between the locking devices in each set.

4. In 121, machine tool, a substantially rectangular base; spaced rails upon which base is supported; a clamp device carried by said .rbas adgacent each of its four corners to secure saidbase to said rails, said clamp devices. being arranged in two connected pairs and each clamp device comprising a verticallymovable slide block having jaw portions adapted to engage beneath the head of one of said rails, a rotatable eccentric element fitted within an aperture in said slide block,

a rock-shaft sustaining each of said eccentric elements, a rock-arm secured to each said rock shafts; an equalizing bar connected to the rock-arms of each pair of clamp devices; aflu d pressure motor supported by said base intermediate said equalizing bars,

said motor comprising a 'shiftable cylinden operatively connected to one of said equalizing bars; a shiftable piston slildably mounted in said cylinder and operatively connected with the other of said equalizing bars; and

means to admit fluid pressure into said motor g 5. In a machine tool, a base; a support therefor; a plurality of pairs of connected clamps for securing said base to its support: equalizing means between each pair of clamps; a cylinder supported by said base a fluid pressure motor supported within said cylinder and comprising a second cylinder slidably mounted in the first named cylinder, a piston slidably fitted within the second cylinder; fluid pressure lines connected withg loo said second cylinderat opposite ends of said piston; an operative connection between the second cylinder and one of said pairs of clamps; and an operative connection between said piston and the other of said pairs of; .105 clamps.

6. In a mobile drill, a base; wheels on said base; a track supportin said wheels; a pluralit-y of clamps having port-ions movable upwardly and engaging beneath a portion 016;,110

said track and cooperating with said wheels securely'tolock said base against movement on said track;'power means including rotatable eccentric devices for actuating said clamps; and means for equalizing the p1'es- ;;l15

wheels tosecure said base in adjusted positions along said rails; a shaft; a. motor carried by said base and connected to rotate said shaft; eccentric-devices secured to said shaft 25 and rotatable therewith; and an operative connection between saideccentric devices and said clamps to actuate the latter by rotation of the former.

8. A mobile radial drill combining, a base; if)

tical engagement with the underside of the;.;l2o

head of said rails and cooperating with said a support therefor; a plurality of clamps-10 I cated in spaced relation on said base 'for se wcuringthe base toits support, said clamps" having jaws. movable upwardly into clamping contact'with said support; eccentric de-.

vices located remote from support and con- I tacted with said clamp jaws for actuating said clamps; and a motor, movable with saidbase,

'Jconnected ,to turn said eccentric, devices to' cause said clamp jaws to grip said-support.

9. In a mobile radial drill, a substantially I rectangular base; spacedrails upon which said base ismovably supported; a clamp device carried by said base adjacent each ofits W four corners to secure said base to said rails,

said clamp devices being arranged in two con i ,nected pairs and each clamp device including a vertically movable member having pore tions adaptedtoengage beneath the headof 7 g one of said railsyrotatable eccentric elements i L J connected to shift said movable clamp mem- ,g bers; a motor c'arried by said base connected to rotate said eccentric elements; and an equalizing device between the pairs of clamp 3125 devices. I Y Y is 10..In a mobile drill, a base; a support upon which said base is movably mounted;

.\ a plurality of clamp devices for securing said base to said support, said clamps being {g m ,arranged in pairs and each-clamp device in-' '5 eluding a member movable into engagement with said support; rotary eccentric means for shifting said movable members to set said clamps; power means carried by said base for I v gu rotating said eccentric means; and an equalizing device between the clamps of each pair.

11. In a'm'obile drill, a base; a support upon which said base is movably mounted; a

plurality of clamps for securing said base 5 s to its support, each of said'clampscom'pris- L ing a head movable into engagement with an underside of said support; a rotatable eccentric device and a lever for moving said head int-0 engagementwith said support; and a i power motor, carried by said base, connected to rotate said eccentric device. .7

12. In a mobile radial drill, a substantial- 1y rectangularbase; a trackon which said 1 base is movably mounted; a plurality oil clamping devices carried by said base, adja- T cent its four corners, and adapted to engage said track,'securely to lockv said base against movement during a drilling operation, each of said clamp devices "including anelement movable. into locking engagement with said track; and a single actuator carried by said base and operatively connected withall of" said clamp devices for simultaneously 'actuatingthe latten; p a a In witness whereof, I hereunto subscribe my name. I 1 I nAvI o. KLAUSMEYEB.

CERTIFICATE OF CORRECTION.

Patent No. 1,875,016. August 30, 1932.

DAVID C. KLAUSMEYER.

It is hereby certified that error appears in the printed specification of the abeve numbered patent requiring correction as follows: Page 4, lines 6 and 7, claim 8, for "contacted" read connected; and line 46, claim 11, for "device" read devices; and'that the said Letters Patent should be read with these corrections therein that the. samemay conform to the recordof the case in the Patent Office.

Signed and sealed this 22nd day of November, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

